In man even though both air and food go through the pharynx, food does not normally neter the wind pipe because during swallowing of food

Options

A. theepiglottis covers the glottis
B. sphincter of Oddi closes the hepato-pancreatic duct
C. phyloric sphincter convers the opening of stomach into the duodenum
D. none of these

Answer

A

Explanation

A cartilagnous flap called epiglottis prevents the entry of fodd into the glottis, opening of the wind pipe.